Class 11- Biology- chapter 16- Excretory Products and their Elimination InstructionTotal Questions : 20Total time :20 minTotal Marks : 20 x 3 = 60 MarksEach Correct Question carries : 3 MarksEach incorrect Question Carries : -1 MarksEach Unattempted Question carry : 0 MarksBe careful On Negative Markings 1. lonosnic pathway occurs in Guanotelism Ureotelism Uricotelism Ammonotelism None 2. The nephrons discharge their urine at the Urinary bladder Renal pyramid Renal pelvis Urethra None 3. Which of the following statements is incorrect? The medullary zone of kidney is divided into a few conical masses called medullary pyramid projecting into the calyces. Renal corpuscle, proximal convoluted tubule (PCT) and distal convoluted tubule(DCT) of the nephron are situated in the cortical region of kidney. Inside the kidney the cortical region extends in between the medullary pyramids as renal pelvis. Glomerulus along with Bowman's capsule is called the renal corpuscle. None 4. Connecting tubule acts as part of which organ Heart Pancreas Kidney Liver None 5. The excretory material of bony fish is Protein Urea Amino acid Ammonia None 6. Study the following. (i) Uricase enzyme is not found in apes and man.(ii) Purine metabolism leads to the formation of uric acid.(iii) In ureotelic organisms, carbondioxideCO2 and ammonia converted into urea through the Cori cycle.(iv) More energy consumed is for the production of uric acid.(v) TMO (Trimethylamine oxide) protects the proteins from the effect of urea in Chondrichthyes fishes. Which of the given statements are correct? All, except V All, except II All, except IV All, except III None 7. Which one of the following statements is correct with respect to salt water balance inside the body of living organisms? Paramecium discharges concentrated salt solution by contractile vacuoles. The body fluids of fresh water animals are generally hypotonic to surrounding water. When water is not available camels do not produce urine but store urea in tissues. Salmon fish excretes lot of stored saIt through gill membrane in fresh water. None 8. If kidneys fail to reabsorb water, the effect on tissue would Take more O2 from the blood Remain unaffected Shrink and shrivel Absorb water from blood plasma None 9. Mark the inappropriate term w.r.t. the glomerular filtration. Occurs due to pressure difference Non selective Passive process Active process None 10. The urine under normal conditions does not contain glucose because Glucose of blood is not filtered in the glomerulus. Glucose in glomerular filtrate is converted into glycogen. Glucose in glomerular filtrate is reabsorbed in the uriniferous tubules. The normal blood sugar is fructose. None 11. Which one of the following statements in regard to the excretion by the human kidneys is correct ? Descending limb of loop of Henle, impermeable to water Distal convoluted tubule is incapable reabsorbing 𝐻 𝐶 𝑂 3 Ascending limb of loop of Henle in impermeable to electrolytes Nearly 99% of glomerular filtrate is reabsorbed by renal tubules None 12. Which disease is caused due to high accumulation of uric acid in the bloodstream? Uremia Hyperuremia Hyperuricemia Hypouremia None 13. How many molecules of ammonia are required to form 8 molecules of urea? 4 34 16 8 None 14. Ducts of Bellini open in Major calyx Renal sinus Renal pyramid Minor calyx None 15. The function of counter current mechanism is performed byI. GillsII. KidneysIII. IntestinesIV. Lungs I, II, and IV I, II, III, and IV I and III only II and IV only None 16. The filtrate from the glomerulus contains Urea, uric acid, ammonia and water Urea, uric acid, glucose and water Urea and uric acid Urea, uric acid and ammonia None 17. Column of Bertin is extension of Renal-capsule into cortex Renal pelvis into renal, sinus Medulla into cortex Cortex into medulla None 18. Which of the following statement is false Nephrons perform excretion through filtration, reabsorption and secretion. Tapeworm have excretory flame cells Nephrons begin with Bowmen's capsule having glomerulus Nephridia are accessory excretory organs in Prawn None 19. Complete the following paragraph by selecting the option that correctly fills the blanks (i) - (iv).The kidneys have built-in mechanisms for the regulation of glomerular filtration rate. One such efficient mechanism is carried out by (i). It is a special sensitive region formed by cellular modifications in the (ii) and the (iii) at the location of their contact. A fall in GFR can activate the JG cells to release (iv) which can stimulate to glomerular blood flow and thereby brings GFR back to normal. JGA PCT Efferent arteriole Angiotensinogen JGA DCT Afferent arteriole Renin ANF DCT Afferent arteriole Renin ANF PCT Efferent arteriole Angiotensin None 20. Which is not part of renal pyramid Collecting ducts Convoluted tubules Peritubular capillaries Loop of Henle None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
